/* Hiasan halaman sampul: huruf berjalan, judul ditulis, bundaran kursor */

.sampul { position: relative; overflow: hidden; }
.sampul-isi { position: relative; z-index: 1; }

/* ---------- 1. Huruf hijaiyah berjalan (tiga baris, arah berlawanan) ---------- */

.hiasan-huruf {
    position: absolute;
    left: 0;
    right: 0;
    top: 172px;      /* tinggi pita emas + pola */
    bottom: 128px;   /* tinggi kaki biru */
    z-index: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    pointer-events: none;
}

.jalur {
    overflow: hidden;
    white-space: nowrap;
    opacity: .12;
    -webkit-mask-image: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent);
    mask-image: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent);
}
.jalur.emas { opacity: .32; }

.jalur-isi {
    display: flex;
    width: max-content;
    will-change: transform;
    animation: geser-kiri var(--durasi, 60s) linear infinite;
}
.jalur.kanan .jalur-isi { animation-name: geser-kanan; }

.grup { display: flex; flex: none; }

.grup span {
    flex: none;
    padding: 0 .35em;
    font-family: 'Noto Sans Arabic', 'Lateef', serif;
    font-size: clamp(3rem, 9vw, 5.5rem);
    line-height: 1.5;
    color: var(--biru);
}
.jalur.emas .grup span { color: var(--emas); }

@keyframes geser-kiri  { from { transform: translateX(0); }    to { transform: translateX(-50%); } }
@keyframes geser-kanan { from { transform: translateX(-50%); } to { transform: translateX(0); } }

/* ---------- 2. Judul ditulis huruf demi huruf ---------- */

.kata { white-space: nowrap; }

.tulis-huruf {
    display: inline-block;
    opacity: 0;
    transform: translateY(.12em);
}
.tulis-huruf.muncul {
    opacity: 1;
    transform: none;
    transition: opacity .12s ease, transform .22s ease;
}

/* Kursor ketik: lebar 0 supaya teks tidak bergeser saat kursor berpindah */
.kursor-ketik {
    position: relative;
    display: inline-block;
    width: 0;
    height: .85em;
    vertical-align: -.05em;
}
.kursor-ketik::after {
    content: '';
    position: absolute;
    left: .03em;
    top: 0;
    bottom: 0;
    width: .07em;
    background: var(--emas);
    animation: kedip 1s steps(1) infinite;
}
@keyframes kedip { 50% { opacity: 0; } }

/* Teks pendamping muncul setelah judul selesai ditulis */
.sampul.animasi .logo,
.sampul.animasi .sampul-situs,
.sampul.animasi .sampul-tagline,
.sampul.animasi .sampul-seru,
.sampul.animasi .sampul-sub,
.sampul.animasi .tombol-mulai,
.sampul.animasi .langkah {
    opacity: 0;
    transform: translateY(14px);
}
.sampul.animasi .sampul-judul::after { opacity: 0; }

.sampul.animasi.siap .logo,
.sampul.animasi.siap .sampul-situs,
.sampul.animasi.siap .sampul-tagline,
.sampul.animasi.siap .sampul-seru,
.sampul.animasi.siap .sampul-sub,
.sampul.animasi.siap .tombol-mulai,
.sampul.animasi.siap .langkah {
    opacity: 1;
    transform: none;
    transition: opacity .6s ease, transform .6s ease;
}
.sampul.animasi.siap .sampul-judul::after { opacity: 1; transition: opacity .6s ease; }
.sampul.animasi.siap .sampul-tagline { transition-delay: .1s; }
.sampul.animasi.siap .sampul-seru { transition-delay: .2s; }
.sampul.animasi.siap .sampul-sub { transition-delay: .3s; }
.sampul.animasi.siap .tombol-mulai { transition-delay: .4s; }
.sampul.animasi.siap .langkah { transition-delay: .5s; }

/* ---------- 3. Bundaran di sekeliling kursor ---------- */

.cincin-kursor {
    position: fixed;
    left: 0;
    top: 0;
    width: 42px;
    height: 42px;
    border: 2px solid var(--biru);
    border-radius: 50%;
    background: rgba(30, 96, 157, .06);
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    will-change: transform;
    transition: width .18s ease, height .18s ease, background-color .18s ease,
                border-color .18s ease, opacity .2s ease;
}
.cincin-kursor.aktif { opacity: 1; }
.cincin-kursor.besar { width: 68px; height: 68px; background: rgba(232, 199, 102, .12); border-color: var(--emas); }
.cincin-kursor.tekan { width: 30px; height: 30px; }

/* ---------- Teks sampul: TASDIG ---------- */

.sampul-isi { padding-top: 16px; }
.logo { width: 52px; height: 52px; }
.sampul-situs { margin: 2px 0 12px; }

.sampul-judul {
    display: inline-block;
    margin: 0;
    font-size: clamp(3rem, 10vw, 5rem);
    line-height: 1.05;
}
/* garis lengkung emas di bawah judul */
.sampul-judul::after {
    content: '';
    display: block;
    width: 96%;
    height: 12px;
    margin: .1em auto 0;
    border-bottom: 4px solid var(--emas);
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
}

.sampul-tagline {
    margin: 6px 0 18px;
    font-size: clamp(1rem, 3vw, 1.35rem);
    font-weight: 500;
    letter-spacing: .32em;
    text-indent: .32em;
    color: var(--biru-tua);
}

.sampul-seru {
    margin: 0 0 14px;
    font-size: clamp(1.35rem, 4.2vw, 2.1rem);
    font-weight: 700;
    line-height: 1.25;
    color: var(--biru-tua);
}
.sampul-seru-emas { color: #9a6a14; }

.sampul-sub {
    max-width: 38rem;
    margin: 0 0 22px;
    text-wrap: balance;
    font-size: clamp(.95rem, 2.4vw, 1.1rem);
    color: var(--biru-tua);
}

/* ---------- Empat langkah berikon ---------- */

.langkah {
    list-style: none;
    margin: 30px 0 0;
    padding: 0;
    width: 100%;
    max-width: 920px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 14px;
}
.langkah li {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: .86rem;
    line-height: 1.4;
    color: var(--teks);
}
.ikon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 58px;
    height: 58px;
    border-radius: 50%;
}
.ikon-biru  { background: #dbe8f6; color: #1e609d; }
.ikon-emas  { background: #f7e9c8; color: #8a5d0f; }
.ikon-hijau { background: #d3ece1; color: #1f6b50; }
.ikon-ungu  { background: #e6dcf3; color: #5b3fa0; }

@media (min-width: 760px) {
    .langkah { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px 22px; }
}

/* ---------- Hormati pengguna yang mematikan animasi ---------- */

@media (prefers-reduced-motion: reduce) {
    .jalur-isi { animation: none; }
    .kursor-ketik::after { animation: none; }
}